19febg08 There are (at least) two different glut32.dll floating around. The one in this directory works with practically all illimath rtica.exe files, except when it doesn't. Here is a new glut32.dll, which you can tell from its predecessor only by its size (it's bigger). It is called newglut32.dll but you must rename it to just glut32.dll (and put it on your path if you're using the cmd shell). Otherwise, plunk it into C:\windows\ since windows seems to look there regardless how you launch.